./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-76.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-76.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 668406c060c4d5d195fc7696a302d1e12de395be857d770331d525cc15c19b43 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:42:31,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:42:31,208 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:42:31,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:42:31,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:42:31,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:42:31,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:42:31,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:42:31,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:42:31,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:42:31,252 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:42:31,252 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:42:31,253 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:42:31,253 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:42:31,253 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:42:31,253 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:42:31,253 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:42:31,253 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:42:31,253 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:42:31,254 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:42:31,254 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:42:31,254 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:42:31,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:42:31,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:42:31,255 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:42:31,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:42:31,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:42:31,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:42:31,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:42:31,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:42:31,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:42:31,258 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:42:31,258 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:42:31,258 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:42:31,259 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:42:31,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:42:31,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:42:31,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:42:31,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:42:31,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:42:31,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:42:31,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:42:31,260 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:42:31,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:42:31,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:42:31,261 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:42:31,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:42:31,261 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 668406c060c4d5d195fc7696a302d1e12de395be857d770331d525cc15c19b43 [2024-11-13 23:42:31,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:42:31,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:42:31,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:42:31,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:42:31,636 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:42:31,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-76.i Unable to find full path for "g++" [2024-11-13 23:42:33,761 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:42:34,167 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:42:34,168 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-76.i [2024-11-13 23:42:34,186 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/data/7fb1a27f9/6360176c08364d52974985538728c7c7/FLAG240c01e1d [2024-11-13 23:42:34,214 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/data/7fb1a27f9/6360176c08364d52974985538728c7c7 [2024-11-13 23:42:34,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:42:34,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:42:34,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:42:34,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:42:34,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:42:34,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e0788d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34, skipping insertion in model container [2024-11-13 23:42:34,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,263 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:42:34,454 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-76.i[917,930] [2024-11-13 23:42:34,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:42:34,520 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:42:34,533 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-76.i[917,930] [2024-11-13 23:42:34,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:42:34,575 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:42:34,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34 WrapperNode [2024-11-13 23:42:34,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:42:34,577 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:42:34,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:42:34,578 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:42:34,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,626 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 109 [2024-11-13 23:42:34,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:42:34,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:42:34,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:42:34,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:42:34,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,639 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,648 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:42:34,657 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:42:34,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:42:34,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:42:34,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34" (1/1) ... [2024-11-13 23:42:34,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:42:34,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:42:34,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:42:34,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:42:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:42:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 23:42:34,762 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 23:42:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:42:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:42:34,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:42:34,886 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:42:34,890 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:42:35,209 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-13 23:42:35,209 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:42:35,420 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:42:35,422 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 23:42:35,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:42:35 BoogieIcfgContainer [2024-11-13 23:42:35,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:42:35,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:42:35,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:42:35,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:42:35,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:42:34" (1/3) ... [2024-11-13 23:42:35,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0d683a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:42:35, skipping insertion in model container [2024-11-13 23:42:35,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:42:34" (2/3) ... [2024-11-13 23:42:35,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0d683a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:42:35, skipping insertion in model container [2024-11-13 23:42:35,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:42:35" (3/3) ... [2024-11-13 23:42:35,437 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-76.i [2024-11-13 23:42:35,457 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:42:35,459 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_has-floats_file-76.i that has 2 procedures, 32 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 23:42:35,529 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:42:35,546 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f2e93bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:42:35,546 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:42:35,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 23:42:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 23:42:35,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:42:35,566 INFO L215 NwaCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:42:35,566 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:42:35,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:42:35,573 INFO L85 PathProgramCache]: Analyzing trace with hash -52470057, now seen corresponding path program 1 times [2024-11-13 23:42:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:42:35,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116754726] [2024-11-13 23:42:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:35,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:42:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:42:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-13 23:42:37,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:42:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116754726] [2024-11-13 23:42:37,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116754726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:42:37,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472995546] [2024-11-13 23:42:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:37,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:42:37,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:42:37,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:42:37,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27aa17a9-6276-401b-b278-946ce436c217/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:42:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:42:37,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 23:42:37,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:43:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 9 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-13 23:43:34,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:44:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-13 23:44:26,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472995546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:44:26,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [227819620] [2024-11-13 23:44:26,552 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2024-11-13 23:44:26,552 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:44:26,555 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:44:26,559 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:44:26,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs